Finding the Third Proportional to 644,036 and 1,412,488

Step by Step Solution

1. Step 1: Write the proportion equation
   644,036 : 1,412,488 = 1,412,488 : x
2. Step 2: Convert to fraction form
   644,036/1,412,488 = 1,412,488/x
3. Step 3: Cross multiply
   644,036x = 1,412,488 × 1,412,488
4. Step 4: Simplify right side
   644,036x = 1,995,122,350,144
5. Step 5: Solve for x
   x = 1,995,122,350,144/644,036
6. Step 6: Final answer
   x = 3,097,842.90